One objection I have perhaps in line with the GP here is that they are literally bringing in "browser" things with Textualize -- layout is done with CSS Grid an

One objection I have perhaps in line with the GP here is that they are literally bringing in "browser" things with Textualize -- layout is done with CSS Grid and they are actively working on supporting more and more CSS. One view of things is that means the Textualize developers were probably web developers and they wished Text UI programming was similar. The most mainstream Graphical UI on desktop that allows using CSS for layout is Electron which is basically an entire Chromium browser running a single web application with HTML, CSS, and Javascript heavily involved. Therefore, one potential "end-game" for Textualize is to add enough features that it becomes a browser itself or to be supplanted by Electron adding Text UI support.